Sorry if I wasn't clear. Windows 8.1 will not need drivers for your board. Windows usually has its own drivers for older hardware. If there are any drivers it does not already have you can probably install the windows 7 drivers on windows 8.1. Just be sure they are 32bit if you install 8.1 32bit and 64bit if you install 8.1 64bit. I have done this myself for some of my older hardware, for the most part the windows 7 64bit drivers work fine in windows 8.1 64bit. 

You should be able to install 8.1/10 but there may be difficulties finding drivers for some things. The best way to know for certain is to try. For the most part windows 8.1 and 10 should have native driver support for most of what you need.